not. >> reporter: after all, former sergeant andrew bell tratrand k a thing or two about service. he's gone to more than ten countries with the marines. >> take a big breath and let it go. >> reporter: and trystan says he's pretty good at playing, too. trystan and andrew have come to this sprawling california dude ranch today for one of many visits throughout the year. >> you know, one of the best things is trystan will call me on face time and share a song he just learned on the piano, and that's just something special that i know he would have shared with his father. >> reporter: you see, trystan's father, heath kelly, isn't able to talk with him about the very dreams that he inspired. >> my dad was in the army, so i feel like i want to be an army officer like he was. >> reporter: heath kelly died shortly after trystan was born. >> my husband always wanted to be a dad, even before we got married, so this is our first baby and, you know, anytime, any spare time he had was really devoted to being with her. you know, and also with him, too, because he was born in july